I did a mainline on all of them, cutting at node 3 and stripping everything below. I let them grow out to 8 main branches on each side keeping them tied down along the way. I only topped the two main ends of each of them. I kept some of the laterals that grew on each main. As they grew longer, around veg week 6, I built the scrog in and started to direct each branch and lateral to areas away from each other, crisscrossing as necessary to keep them all the same height and trying to fill as many of the scrog squares as I can.